经颅多普勒超声的常用骨窗是：（）、（）、（）。
参考答案：颞窗；枕窗；眼窗
Young men should constantly _________their own state of mind so as to adapt to the circumstances in which fierce competition is going on .
A．modify
B．adjust
C．conduct
D．liberate
--- You didn’t lock the back door.
--- You are wrong. I ______.
A．have locked it
B．lock it myself
C．did lock it
D．do lock it
